Compositionally Graded BST Ceramics Prepared by Tape Casting

Graded ferroelectric ceramics based on barium strontium titanate solid solutions Ba 1 − x Sr x TiO 3 (x = 0-0.3) was prepared by tape casting. Its microstructure and dielectric properties were investigated. A significant change of grain sizes was observed in the graded samples, decreasing with the i...

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Bibliographic Details
Published in:Ferroelectrics 2009-01, Vol.386 (1), p.125-132
Main Authors: Shut, V. N., Syrtsov, S. R., Trublovsky, V. L., Poleyko, A. D., Kostomarov, S. V., Mastyko, L. P.
Format: Article
Language:English
Subjects:
BST
Ceramics
Compositionally graded ferroelectrics
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Dielectric loss and relaxation
Dielectric properties
Dielectric properties of solids and liquids
Dielectrics, piezoelectrics, and ferroelectrics and their properties
Exact sciences and technology
Ferroelectrics
Microstructure
Permittivity (dielectric function)
Physics
Temperature effects
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Summary:Graded ferroelectric ceramics based on barium strontium titanate solid solutions Ba 1 − x Sr x TiO 3 (x = 0-0.3) was prepared by tape casting. Its microstructure and dielectric properties were investigated. A significant change of grain sizes was observed in the graded samples, decreasing with the increase of strontium concentration. The samples demonstrated high temperature stability of dielectric characteristics. In the ceramics with x varying from 0 to 0.3 the temperature coefficient of capacitance (TCC) did not exceed 10% in the range T = 20-100°C.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150190902961876